update github actions

.github/workflows/php.yml

@@ -12,6 +12,8 @@ on:
 
 jobs:
   test:
+    name: Unit tests
+
     runs-on: ubuntu-latest
 
     strategy:
@@ -21,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Setup php
+      - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-versions }}
@@ -39,3 +41,29 @@ jobs:
         env:
           COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: ./vendor/php-coveralls/php-coveralls/bin/php-coveralls --coverage_clover=build/logs/clover.xml -v
+
+  phpstan:
+    name: Code quality
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php-versions: [ '8.0', '8.1', '8.2', '8.3' ]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+
+      - name: Validate
+        run: composer validate
+
+      - name: Install
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run PHPStan
+        run: vendor/bin/phpstan analyse --memory-limit=-1